High Melting Steel Scraps

High-melting steel scrap refers to steel waste with a high content of alloying
elements and iron that requires elevated temperatures to melt. This scrap is
particularly suitable for producing high-grade steels, stainless steel, and
specialty alloys. It is highly valued in steelmaking due to its consistent
chemical composition, low contamination, and excellent melting properties.

1. Origin of High-Melting Steel
Scrap

High-melting steel scrap is
obtained from industrial, automotive, and construction sources, including:

1. Industrial Offcuts:
   
   • Steel manufacturing by-products such as rolled
     plates, rods, sheets, and machining waste.
   • Cuttings and trimmings from steel processing mills.
2. Obsolete Machinery & Equipment:
   
   • Retired industrial machinery, heavy equipment, and
     factory tools.
   • Mining and construction equipment frames.
3. Automotive Scrap:
   
   • End-of-life vehicles, engines, frames, and
     structural parts.
   • Alloyed components containing chromium, nickel, or
     molybdenum.
4. Construction & Demolition Waste:
   
   • Structural beams, rebar, and steel frameworks from
     demolished buildings, bridges, and infrastructure projects.
5. Alloy Steel & Tool Steel Scrap:
   
   • Waste from high-grade alloy steel production,
     stainless steel components, and cutting tools.
   • Often includes high chromium, nickel, or vanadium
     content.

2. Specifications of
High-Melting Steel Scrap

High-melting steel scrap is
characterized by its metal content, chemical composition, size, and physical
quality. Typical specifications are:

Chemical Composition:

Physical Form:

• Shredded Scrap: 50–300 mm pieces for furnace
  charging.
• Bundled/Plate Scrap: 5–50 mm thick sheets,
  clean and compact.
• Heavy Steel Scrap: Large beams or industrial
  equipment, often over 500 kg per piece.

Other Quality Parameters:

• Minimal oil, paint, or non-metallic contaminants (≤2%
  by weight).
• Low moisture content.
• Uniform and consistent composition to facilitate
  high-temperature melting.

Melting Point:

• High-melting scrap generally has a melting point of 1,500–1,600°C,
  depending on alloy content, making it suitable for Electric Arc Furnace
  (EAF) steel production.

3. Standards and
Classifications

High-melting steel scrap quality
is certified according to international standards:

• ISRI (Institute of Scrap Recycling Industries)
  Codes – widely used in the U.S.
• EN 10029 / EN 10079 – European standards for
  alloy and high-grade steel scrap.
• JIS (Japanese Industrial Standards) – for
  stainless and alloy steel scrap.

Classification is often based on:

• Chemical composition (carbon content, alloy
  elements)
• Physical form (shredded, heavy scrap, bundled
  plates)
• Contamination level (oil, paint, non-ferrous
  inclusions)

4. Applications of High-Melting
Steel Scrap

High-melting steel scrap is
essential in modern steelmaking:

• Electric Arc Furnace (EAF) Production: Primary
  feedstock for producing new steel, stainless steel, and alloyed steel.
• Induction Furnace Operations: Used in smaller
  steelmaking units for specialty and tool steels.
• Alloy Steel Production: Provides precise
  control over alloying elements in high-grade steel.
• Stainless Steel Manufacturing: Chromium and
  nickel-rich scrap are recycled to produce corrosion-resistant steels.

Advantages:

• Reduces the consumption of virgin iron ore and
  primary energy.
• Environmentally friendly by lowering CO₂ emissions.
• Cost-effective feedstock for high-quality steel
  production.